Tallulah Willis and Justin Acee’s love is unbreakable.

In fact, the pair are officially husband and wife, with the youngest daughter of Bruce Willis and Demi Moore having tied the knot with her love in an Aug. 8 ceremony in Idaho, according to Vogue.

For the occasion, the 32-year-old wore a custom Balenciaga wedding gown, brought to life by the brand’s creative director Pierpaolo Piccioli in one of the only wedding dresses he’s ever designed under the label.

The look—which came together in a matter of months before the summer nuptials—featured a strapless bodice with a dramatic, draped skirt and train that fastened with a bow on Tallulah’s back before descending into a long train.

For her final fitting a week before she said “I do,” Tallulah was joined by her mom, Demi, as well as her two sisters Rumer, 37, and Scout, 35, to see the final look come together.

“This morning I’m feeling almost out of body,” she told Vogue. “I have my family here, I’m trying on this dress, being in kind of a princess moment.”